Sorry for the double listing but no one in engine building was answering my question, do you need to replace the Valves or any of the Valve train for boost, I know you can get new turbo cams and rev higher and then of course you would want to replace the valve train but I am just using the stock cam for now and when I switch to a turbo cam I will do the whole head. Just want to keep from ruining anything but really don't want to buy anything for the head right now unless its needed. I am only looking at moderate boost and it will be finely tuned with my AEM EMS. Thanks for any help.